Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 503 insertions, 0 deletions

diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
new file mode 100644
index 000000000..593540da9
--- /dev/null
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -0,0 +1,503 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2010 Cisco Systems, Inc.
+ */
+
+/* XXX TBD some includes may be extraneous */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/utsname.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/configfs.h>
+#include <linux/ctype.h>
+#include <linux/hash.h>
+#include <linux/rcupdate.h>
+#include <linux/rculist.h>
+#include <linux/kref.h>
+#include <asm/unaligned.h>
+#include <scsi/libfc.h>
+
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+
+#include "tcm_fc.h"
+
+#define TFC_SESS_DBG(lport, fmt, args...) \
+	pr_debug("host%u: rport %6.6x: " fmt,	   \
+		 (lport)->host->host_no,	   \
+		 (lport)->port_id, ##args )
+
+static void ft_sess_delete_all(struct ft_tport *);
+
+/*
+ * Lookup or allocate target local port.
+ * Caller holds ft_lport_lock.
+ */
+static struct ft_tport *ft_tport_get(struct fc_lport *lport)
+{
+	struct ft_tpg *tpg;
+	struct ft_tport *tport;
+	int i;
+
+	tport = rcu_dereference_protected(lport->prov[FC_TYPE_FCP],
+					  lockdep_is_held(&ft_lport_lock));
+	if (tport && tport->tpg)
+		return tport;
+
+	tpg = ft_lport_find_tpg(lport);
+	if (!tpg)
+		return NULL;
+
+	if (tport) {
+		tport->tpg = tpg;
+		tpg->tport = tport;
+		return tport;
+	}
+
+	tport = kzalloc(sizeof(*tport), GFP_KERNEL);
+	if (!tport)
+		return NULL;
+
+	tport->lport = lport;
+	tport->tpg = tpg;
+	tpg->tport = tport;
+	for (i = 0; i < FT_SESS_HASH_SIZE; i++)
+		INIT_HLIST_HEAD(&tport->hash[i]);
+
+	rcu_assign_pointer(lport->prov[FC_TYPE_FCP], tport);
+	return tport;
+}
+
+/*
+ * Delete a target local port.
+ * Caller holds ft_lport_lock.
+ */
+static void ft_tport_delete(struct ft_tport *tport)
+{
+	struct fc_lport *lport;
+	struct ft_tpg *tpg;
+
+	ft_sess_delete_all(tport);
+	lport = tport->lport;
+	lport->service_params &= ~FCP_SPPF_TARG_FCN;
+	BUG_ON(tport != lport->prov[FC_TYPE_FCP]);
+	RCU_INIT_POINTER(lport->prov[FC_TYPE_FCP], NULL);
+
+	tpg = tport->tpg;
+	if (tpg) {
+		tpg->tport = NULL;
+		tport->tpg = NULL;
+	}
+	kfree_rcu(tport, rcu);
+}
+
+/*
+ * Add local port.
+ * Called thru fc_lport_iterate().
+ */
+void ft_lport_add(struct fc_lport *lport, void *arg)
+{
+	mutex_lock(&ft_lport_lock);
+	ft_tport_get(lport);
+	lport->service_params |= FCP_SPPF_TARG_FCN;
+	mutex_unlock(&ft_lport_lock);
+}
+
+/*
+ * Delete local port.
+ * Called thru fc_lport_iterate().
+ */
+void ft_lport_del(struct fc_lport *lport, void *arg)
+{
+	struct ft_tport *tport;
+
+	mutex_lock(&ft_lport_lock);
+	tport = lport->prov[FC_TYPE_FCP];
+	if (tport)
+		ft_tport_delete(tport);
+	mutex_unlock(&ft_lport_lock);
+}
+
+/*
+ * Notification of local port change from libfc.
+ * Create or delete local port and associated tport.
+ */
+int ft_lport_notify(struct notifier_block *nb, unsigned long event, void *arg)
+{
+	struct fc_lport *lport = arg;
+
+	switch (event) {
+	case FC_LPORT_EV_ADD:
+		ft_lport_add(lport, NULL);
+		break;
+	case FC_LPORT_EV_DEL:
+		ft_lport_del(lport, NULL);
+		break;
+	}
+	return NOTIFY_DONE;
+}
+
+/*
+ * Hash function for FC_IDs.
+ */
+static u32 ft_sess_hash(u32 port_id)
+{
+	return hash_32(port_id, FT_SESS_HASH_BITS);
+}
+
+/*
+ * Find session in local port.
+ * Sessions and hash lists are RCU-protected.
+ * A reference is taken which must be eventually freed.
+ */
+static struct ft_sess *ft_sess_get(struct fc_lport *lport, u32 port_id)
+{
+	struct ft_tport *tport;
+	struct hlist_head *head;
+	struct ft_sess *sess;
+	char *reason = "no session created";
+
+	rcu_read_lock();
+	tport = rcu_dereference(lport->prov[FC_TYPE_FCP]);
+	if (!tport) {
+		reason = "not an FCP port";
+		goto out;
+	}
+
+	head = &tport->hash[ft_sess_hash(port_id)];
+	hlist_for_each_entry_rcu(sess, head, hash) {
+		if (sess->port_id == port_id) {
+			kref_get(&sess->kref);
+			rcu_read_unlock();
+			TFC_SESS_DBG(lport, "port_id %x found %p\n",
+				     port_id, sess);
+			return sess;
+		}
+	}
+out:
+	rcu_read_unlock();
+	TFC_SESS_DBG(lport, "port_id %x not found, %s\n",
+		     port_id, reason);
+	return NULL;
+}
+
+static int ft_sess_alloc_cb(struct se_portal_group *se_tpg,
+			    struct se_session *se_sess, void *p)
+{
+	struct ft_sess *sess = p;
+	struct ft_tport *tport = sess->tport;
+	struct hlist_head *head = &tport->hash[ft_sess_hash(sess->port_id)];
+
+	TFC_SESS_DBG(tport->lport, "port_id %x sess %p\n", sess->port_id, sess);
+	hlist_add_head_rcu(&sess->hash, head);
+	tport->sess_count++;
+
+	return 0;
+}
+
+/*
+ * Allocate session and enter it in the hash for the local port.
+ * Caller holds ft_lport_lock.
+ */
+static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id,
+				      struct fc_rport_priv *rdata)
+{
+	struct se_portal_group *se_tpg = &tport->tpg->se_tpg;
+	struct ft_sess *sess;
+	struct hlist_head *head;
+	unsigned char initiatorname[TRANSPORT_IQN_LEN];
+
+	ft_format_wwn(&initiatorname[0], TRANSPORT_IQN_LEN, rdata->ids.port_name);
+
+	head = &tport->hash[ft_sess_hash(port_id)];
+	hlist_for_each_entry_rcu(sess, head, hash)
+		if (sess->port_id == port_id)
+			return sess;
+
+	sess = kzalloc(sizeof(*sess), GFP_KERNEL);
+	if (!sess)
+		return ERR_PTR(-ENOMEM);
+
+	kref_init(&sess->kref); /* ref for table entry */
+	sess->tport = tport;
+	sess->port_id = port_id;
+
+	sess->se_sess = target_setup_session(se_tpg, TCM_FC_DEFAULT_TAGS,
+					     sizeof(struct ft_cmd),
+					     TARGET_PROT_NORMAL, &initiatorname[0],
+					     sess, ft_sess_alloc_cb);
+	if (IS_ERR(sess->se_sess)) {
+		int rc = PTR_ERR(sess->se_sess);
+		kfree(sess);
+		sess = ERR_PTR(rc);
+	}
+	return sess;
+}
+
+/*
+ * Unhash the session.
+ * Caller holds ft_lport_lock.
+ */
+static void ft_sess_unhash(struct ft_sess *sess)
+{
+	struct ft_tport *tport = sess->tport;
+
+	hlist_del_rcu(&sess->hash);
+	BUG_ON(!tport->sess_count);
+	tport->sess_count--;
+	sess->port_id = -1;
+	sess->params = 0;
+}
+
+/*
+ * Delete session from hash.
+ * Caller holds ft_lport_lock.
+ */
+static struct ft_sess *ft_sess_delete(struct ft_tport *tport, u32 port_id)
+{
+	struct hlist_head *head;
+	struct ft_sess *sess;
+
+	head = &tport->hash[ft_sess_hash(port_id)];
+	hlist_for_each_entry_rcu(sess, head, hash) {
+		if (sess->port_id == port_id) {
+			ft_sess_unhash(sess);
+			return sess;
+		}
+	}
+	return NULL;
+}
+
+static void ft_close_sess(struct ft_sess *sess)
+{
+	target_stop_session(sess->se_sess);
+	target_wait_for_sess_cmds(sess->se_sess);
+	ft_sess_put(sess);
+}
+
+/*
+ * Delete all sessions from tport.
+ * Caller holds ft_lport_lock.
+ */
+static void ft_sess_delete_all(struct ft_tport *tport)
+{
+	struct hlist_head *head;
+	struct ft_sess *sess;
+
+	for (head = tport->hash;
+	     head < &tport->hash[FT_SESS_HASH_SIZE]; head++) {
+		hlist_for_each_entry_rcu(sess, head, hash) {
+			ft_sess_unhash(sess);
+			ft_close_sess(sess);	/* release from table */
+		}
+	}
+}
+
+/*
+ * TCM ops for sessions.
+ */
+
+/*
+ * Remove session and send PRLO.
+ * This is called when the ACL is being deleted or queue depth is changing.
+ */
+void ft_sess_close(struct se_session *se_sess)
+{
+	struct ft_sess *sess = se_sess->fabric_sess_ptr;
+	u32 port_id;
+
+	mutex_lock(&ft_lport_lock);
+	port_id = sess->port_id;
+	if (port_id == -1) {
+		mutex_unlock(&ft_lport_lock);
+		return;
+	}
+	TFC_SESS_DBG(sess->tport->lport, "port_id %x close session\n", port_id);
+	ft_sess_unhash(sess);
+	mutex_unlock(&ft_lport_lock);
+	ft_close_sess(sess);
+	/* XXX Send LOGO or PRLO */
+	synchronize_rcu();		/* let transport deregister happen */
+}
+
+u32 ft_sess_get_index(struct se_session *se_sess)
+{
+	struct ft_sess *sess = se_sess->fabric_sess_ptr;
+
+	return sess->port_id;	/* XXX TBD probably not what is needed */
+}
+
+u32 ft_sess_get_port_name(struct se_session *se_sess,
+			  unsigned char *buf, u32 len)
+{
+	struct ft_sess *sess = se_sess->fabric_sess_ptr;
+
+	return ft_format_wwn(buf, len, sess->port_name);
+}
+
+/*
+ * libfc ops involving sessions.
+ */
+
+static int ft_prli_locked(struct fc_rport_priv *rdata, u32 spp_len,
+			  const struct fc_els_spp *rspp, struct fc_els_spp *spp)
+{
+	struct ft_tport *tport;
+	struct ft_sess *sess;
+	u32 fcp_parm;
+
+	tport = ft_tport_get(rdata->local_port);
+	if (!tport)
+		goto not_target;	/* not a target for this local port */
+
+	if (!rspp)
+		goto fill;
+
+	if (rspp->spp_flags & (FC_SPP_OPA_VAL | FC_SPP_RPA_VAL))
+		return FC_SPP_RESP_NO_PA;
+
+	/*
+	 * If both target and initiator bits are off, the SPP is invalid.
+	 */
+	fcp_parm = ntohl(rspp->spp_params);
+	if (!(fcp_parm & (FCP_SPPF_INIT_FCN | FCP_SPPF_TARG_FCN)))
+		return FC_SPP_RESP_INVL;
+
+	/*
+	 * Create session (image pair) only if requested by
+	 * EST_IMG_PAIR flag and if the requestor is an initiator.
+	 */
+	if (rspp->spp_flags & FC_SPP_EST_IMG_PAIR) {
+		spp->spp_flags |= FC_SPP_EST_IMG_PAIR;
+		if (!(fcp_parm & FCP_SPPF_INIT_FCN))
+			return FC_SPP_RESP_CONF;
+		sess = ft_sess_create(tport, rdata->ids.port_id, rdata);
+		if (IS_ERR(sess)) {
+			if (PTR_ERR(sess) == -EACCES) {
+				spp->spp_flags &= ~FC_SPP_EST_IMG_PAIR;
+				return FC_SPP_RESP_CONF;
+			} else
+				return FC_SPP_RESP_RES;
+		}
+		if (!sess->params)
+			rdata->prli_count++;
+		sess->params = fcp_parm;
+		sess->port_name = rdata->ids.port_name;
+		sess->max_frame = rdata->maxframe_size;
+
+		/* XXX TBD - clearing actions.  unit attn, see 4.10 */
+	}
+
+	/*
+	 * OR in our service parameters with other provider (initiator), if any.
+	 */
+fill:
+	fcp_parm = ntohl(spp->spp_params);
+	fcp_parm &= ~FCP_SPPF_RETRY;
+	spp->spp_params = htonl(fcp_parm | FCP_SPPF_TARG_FCN);
+	return FC_SPP_RESP_ACK;
+
+not_target:
+	fcp_parm = ntohl(spp->spp_params);
+	fcp_parm &= ~FCP_SPPF_TARG_FCN;
+	spp->spp_params = htonl(fcp_parm);
+	return 0;
+}
+
+/**
+ * ft_prli() - Handle incoming or outgoing PRLI for the FCP target
+ * @rdata: remote port private
+ * @spp_len: service parameter page length
+ * @rspp: received service parameter page (NULL for outgoing PRLI)
+ * @spp: response service parameter page
+ *
+ * Returns spp response code.
+ */
+static int ft_prli(struct fc_rport_priv *rdata, u32 spp_len,
+		   const struct fc_els_spp *rspp, struct fc_els_spp *spp)
+{
+	int ret;
+
+	mutex_lock(&ft_lport_lock);
+	ret = ft_prli_locked(rdata, spp_len, rspp, spp);
+	mutex_unlock(&ft_lport_lock);
+	TFC_SESS_DBG(rdata->local_port, "port_id %x flags %x ret %x\n",
+		     rdata->ids.port_id, rspp ? rspp->spp_flags : 0, ret);
+	return ret;
+}
+
+static void ft_sess_free(struct kref *kref)
+{
+	struct ft_sess *sess = container_of(kref, struct ft_sess, kref);
+
+	target_remove_session(sess->se_sess);
+	kfree_rcu(sess, rcu);
+}
+
+void ft_sess_put(struct ft_sess *sess)
+{
+	int sess_held = kref_read(&sess->kref);
+
+	BUG_ON(!sess_held);
+	kref_put(&sess->kref, ft_sess_free);
+}
+
+static void ft_prlo(struct fc_rport_priv *rdata)
+{
+	struct ft_sess *sess;
+	struct ft_tport *tport;
+
+	mutex_lock(&ft_lport_lock);
+	tport = rcu_dereference_protected(rdata->local_port->prov[FC_TYPE_FCP],
+					  lockdep_is_held(&ft_lport_lock));
+
+	if (!tport) {
+		mutex_unlock(&ft_lport_lock);
+		return;
+	}
+	sess = ft_sess_delete(tport, rdata->ids.port_id);
+	if (!sess) {
+		mutex_unlock(&ft_lport_lock);
+		return;
+	}
+	mutex_unlock(&ft_lport_lock);
+	ft_close_sess(sess);		/* release from table */
+	rdata->prli_count--;
+	/* XXX TBD - clearing actions.  unit attn, see 4.10 */
+}
+
+/*
+ * Handle incoming FCP request.
+ * Caller has verified that the frame is type FCP.
+ */
+static void ft_recv(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct ft_sess *sess;
+	u32 sid = fc_frame_sid(fp);
+
+	TFC_SESS_DBG(lport, "recv sid %x\n", sid);
+
+	sess = ft_sess_get(lport, sid);
+	if (!sess) {
+		TFC_SESS_DBG(lport, "sid %x sess lookup failed\n", sid);
+		/* TBD XXX - if FCP_CMND, send PRLO */
+		fc_frame_free(fp);
+		return;
+	}
+	ft_recv_req(sess, fp);	/* must do ft_sess_put() */
+}
+
+/*
+ * Provider ops for libfc.
+ */
+struct fc4_prov ft_prov = {
+	.prli = ft_prli,
+	.prlo = ft_prlo,
+	.recv = ft_recv,
+	.module = THIS_MODULE,
+};